"Tantrasangraha", composed by the renowned Kerala astronomer Nilakantha Somayaji (c. 1444-1545 AD) ranks along with "Aryabhatiya" of Aryabhata and "Siddhantasiromani" of Bhaskaracarya as one of the major works which significantly influenced further work on astronomy in India. One of the distinguishing features is the introduction... more...